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Finding the Fourth Proportional to 547,208.30, 820,812.45 and 192,104.30

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Solution

The fourth proportional to 547,208.30, 820,812.45 and 192,104.30 is: 288,156.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,208.30 : 820,812.45 = 192,104.30 : x
  2. Step 2: Convert to fraction form
    547,208.30/820,812.45 = 192,104.30/x
  3. Step 3: Cross multiply
    547,208.30x = 820,812.45 × 192,104.30
  4. Step 4: Simplify right side
    547,208.30x = 157,681,601,138.54
  5. Step 5: Solve for x
    x = 157,681,601,138.54/547,208.30
  6. Step 6: Final answer
    x = 288,156.45

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.